River Yapó, Curitiba, and Boqueirão, Paraná, Brazil.
Sister to C. rectirostris (which see). Monotypic.
SE Brazil (S São Paulo S to N Rio Grande do Sul), E Paraguay (records from Caazapá, Alto Paraná, and possibly S Caaguazú) and NE Argentina (Misiones).
Food and feeding
Status and conservation
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